Import duty from the UK to the USA is the standard Most Favored Nation rate for the product's HTS code, because the United States and the United Kingdom have no comprehensive free trade agreement that would lower it. There is no single UK duty rate. What you pay is the base rate that any WTO trading partner pays for that code, plus whatever US trade-policy layer is in force when you import, plus any sector-specific tariff on metals or vehicles. Years of US-UK trade talks have not produced a full FTA, so British goods are treated like goods from any other non-preference country. The durable way to plan is to lock the base rate from the code and treat the extra layers as variables you confirm before you file.
Here is how the UK lane actually works: why the code sets the rate, what the base bands look like, the trade-policy and sector layers to check, and where importers get it wrong.
The UK has no FTA with the US, so MFN rates apply
Britain has Permanent Normal Trade Relations with the United States, so UK goods get standard Most Favored Nation column-one treatment in the Harmonized Tariff Schedule. Despite repeated rounds of negotiation since Brexit, there is no comprehensive bilateral free trade agreement in force. That means there is no blanket tariff preference to claim and no rules-of-origin test that lowers the base rate for British origin. You do not get a duty break for buying in the UK, but you also avoid the punitive column-two rates reserved for a handful of countries. The base rate is simply the standard one attached to your HTS code.
The base rate depends entirely on the product
Because the rate rides on the code, two shipments from the same British supplier can owe very different duty. The UK exports a distinctive mix to the US: machinery and precision instruments, cars and parts, Scotch whisky and other spirits, pharmaceuticals, apparel and leather goods. Many machinery and instrument lines carry low or zero base MFN rates, spirits are dutiable at their own specific rates per proof liter, and apparel and footwear sit in the high bands that can top 30 percent. There is no shortcut from the country to the rate; you have to classify the item. Get the code right first, and the base rate follows from it.
The 2026 trade-policy layer on top
On top of the base MFN rate, US trade policy has added a country-level tariff layer that has changed repeatedly and remains contested. Since April 2025 a broad additional tariff around 10 percent has applied to most imports, including those from the UK, and the legal basis for it shifted in early 2026 when the Supreme Court struck down the original emergency-powers authority and the administration re-imposed a comparable rate under a different statute. The practical effect for importers has stayed close to a 10 percent add-on, but the exact figure and its legal footing are the kind of detail you should not copy from an older article. Work out the base rate from your code, then check current CBP guidance and the Chapter 99 provisions of the HTSUS for any additional duty on UK origin at the moment you import, and build your costing so that layer is a variable you can update.
Watch the sector tariffs: metals and vehicles
Two UK-relevant categories carry their own tariffs that sit outside the ordinary duty math. Steel and aluminum from the UK have faced a Section 232 national-security tariff, and as of early 2026 the default rate on those metals is 25 percent, applied independently of the general policy layer. Cars are handled under a separate arrangement: a capped quota of British-made vehicles each year is set at an all-in rate around 10 percent, combining the 2.5 percent MFN car rate with a reduced surcharge, with volumes above the cap treated differently. If you import British steel, aluminum or vehicles, the sector rule, not the base HTS rate, is likely to drive your cost, so confirm which regime applies to your exact product before you quote it.
How to work out the exact duty
The method is the same as any lane. First, classify the product to its 10-digit HTS code, because the base rate is attached to that line. Second, read the MFN base rate for the code. Third, apply it to the customs value, which is normally the transaction value of the goods; under FOB terms international freight is outside the dutiable value, while CIF-style pricing can pull more cost in. Fourth, add any current trade-policy layer for UK origin and any sector tariff on metals or vehicles. Fifth, add the Merchandise Processing Fee and, for ocean freight, the Harbor Maintenance Fee. Pulling the numbers off a supplier's paperwork is faster when you convert the commercial invoice into a clean spreadsheet and match each line to its code and origin. Then run the whole thing through the import duty calculator to see the landed number.
A worked example
Say you import a shipment of British-made precision measuring instruments valued at 100,000 dollars. First you classify: many instruments in Chapter 90 carry a low or zero base MFN rate, so suppose the base rate for the line is 1.7 percent, which is 1,700 dollars of base duty. Now add the current broad policy layer for UK origin, which you confirm at filing time rather than assume, and check that no metals sector tariff applies because the housings are not steel or aluminum in the relevant sense. Add the Merchandise Processing Fee and, for ocean freight, the Harbor Maintenance Fee. In a low-base-rate lane like this, the policy layer can easily exceed the base duty, which is exactly why you cannot plan the lane on the HTS base rate alone.
Where importers get the UK lane wrong
The first mistake is expecting an FTA preference that does not exist; there is no comprehensive US-UK agreement and no certificate that lowers the base rate. The second is assuming a single UK rate, when the rate is the product's rate and swings from zero to over 30 percent by code. The third is baking a volatile policy percentage into a spreadsheet and never updating it, which quietly makes every quote wrong. The fourth is missing a sector tariff, since British steel, aluminum and vehicles follow their own rules that can dwarf the base rate. The fifth is watching only the goods cost and forgetting that on a low-base-rate item the added policy layer and fees can be the larger part of the bill. Each of these starts from a correct code. Describe your product on the live classifier to pin the heading before you cost the lane.
Frequently asked questions
How much is import duty from the UK to the USA?
There is no single rate. You pay the Most Favored Nation base duty for the product's HTS code, which ranges from zero on many machinery and instrument lines to over 30 percent on some apparel, plus any US trade-policy layer in force for UK origin at the time, plus any sector tariff on metals or vehicles, plus the standard entry fees. The UK has no comprehensive free trade agreement with the US, so no blanket preference lowers the base rate.
Does the UK have a free trade agreement with the US?
No comprehensive bilateral free trade agreement is in force. The UK has Permanent Normal Trade Relations status, which gives standard Most Favored Nation treatment, and there have been narrow sector arrangements, such as a capped rate on British-made cars, but there is no broad FTA that removes duty across the board. That means no general tariff preference to claim and no rules-of-origin test to pass for a lower base rate.
Is there a 10 percent tariff on UK goods?
Since April 2025 a broad additional tariff around 10 percent has applied to most imports including those from the UK. Its legal basis changed in early 2026 after a Supreme Court ruling, but the practical add-on has stayed close to 10 percent under a re-imposed measure. Because the figure and its footing can change, confirm the current additional duty for UK origin in CBP guidance and the HTSUS Chapter 99 provisions at the time you import rather than relying on a fixed number.
What is the tariff on British steel or cars?
Steel and aluminum from the UK have faced a Section 232 tariff, with a default rate of 25 percent as of early 2026, applied on top of and separately from the general policy layer. British-made vehicles fall under a separate arrangement that caps a volume each year at an all-in rate around 10 percent. If you import metals or cars, the sector regime rather than the ordinary HTS base rate is likely to set your cost, so verify the current rule for your exact product.
The UK duty question resolves once you have a correct code and a clear read on the current policy and sector layers. Classify your product on the live classifier, price it with the import duty calculator, and if you also source elsewhere in Europe or Asia, compare the numbers against our guides to import duty from China to the USA and import duty from Vietnam to the USA.